Which is the proper OpenGL matrix?

Graphics and GPU Programming Programming OpenGL

Started by Butabah July 11, 2011 08:34 PM

1 comment, last by Butabah 12 years, 9 months ago

100

Author

July 11, 2011 08:34 PM

Hi there, I'm working on some rotations and translations, and would like to know, is the OpenGL matrix structure

m[0] m[1]
m[2] m[3]

or

m[0] m[2]
m[1] m[3]

Brother Bob

10,350

July 11, 2011 08:52 PM

The standard in old OpenGL are are column major, so it's your second option.

But the more general, and actually correct answer is; it depends on what convention you use. When you use shaders and your own matrix computations, you decide the order or everything.

Butabah

100

Author

July 11, 2011 10:03 PM

The standard in old OpenGL are are column major, so it's your second option.

But the more general, and actually correct answer is; it depends on what convention you use. When you use shaders and your own matrix computations, you decide the order or everything.

Okay cool, thank you very much!